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TERMS
Unless otherwise specified, this manual uses the following terms.
Term Description
Backup mode A mode to continue operation in a redundant system by switching the standby system to the control system when
an error occurs in the control system.
Buffer memory Memory in an intelligent function module for storing data such as setting values and monitored values. When
integrated into the CPU module, this memory refers to a memory for storing data such as setting values and
monitored values of the Ethernet function, and data used for data communication of the multiple CPU system
function.
CC-Link IE Field Network-equipped
master/local module
A generic term for the following modules when the CC-Link IE Field Network function is used:
• RJ71GF11-T2
• RJ71EN71
• RnENCPU
Control CPU A CPU module that controls connected I/O modules and intelligent function modules. The multiple CPU system
allows the user to assign this control to any CPU module on a module-by-module basis.
Control system A system that controls a redundant system and performs network communications in a redundant system
Control system execution program A program that is executed only in the CPU module of the control system.
CPU module A generic term for the MELSEC iQ-R series CPU module
CPU Module Logging Configuration Tool Software to configure data logging settings and to manage collected data
Dedicated instruction An instruction for using functions of the module
Device A device (X, Y, M, D, or others) in a CPU module
Device supporting iQSS A generic term for a device which supports iQ Sensor Solution.
For iQ Sensor Solution, refer to the following.
iQ Sensor Solution Reference Manual
Engineering tool A tool used for setting up programmable controllers, programming, debugging, and maintenance.
Ethernet interface module with built-in CC-
Link IE
Another name for the RJ71EN71
Ethernet-equipped module A generic term for the following modules when the Ethernet function is used:
• RJ71EN71
• CPU module
Global label A label that is valid for all the program data when multiple program data are created in the project.
There are two types of global label: a module specific label (module label), which is generated automatically by
GX Works3, and an optional label, which can be created for any specified device.
GX LogViewer Software to display data collected by data logging
I/O module A generic term for the input module, output module, I/O combined module, and interrupt module
Intelligent function module A module that has functions other than input and output, such as an A/D converter module and D/A converter
module
Label A label that represents a device in a given character string
Module label A label that represents one of memory areas (I/O signals and buffer memory areas) specific to each module in a
given character string.
For the module used, GX Works3 automatically generates this label, which can be used as a global label.
Network module A generic term for the following modules:
• Ethernet interface module
• CC-Link IE Controller Network module
• Module on CC-Link IE Field Network
• MELSECNET/H network module
• MELSECNET/10 network module
• RnENCPU (network part)
New control system A system that has switched to control system from standby system after system switching
New standby system A system that has switched to standby system from control system after system switching
Own system The system that contains the CPU module that is used for descriptions.
POU A unit that configures a program. Units are categorized and provided in accordance with functions. A program
that is composed of POUs (program organization units) allows the lower-layer processing, when the program is
multi-layered, to be divided into several units by processing and function, enabling the creation of programs
based on each unit.
Process CPU A generic term for the R08PCPU, R16PCPU, R32PCPU, and R120PCPU
Process CPU (process mode) A Process CPU operating in process mode.
Process control function blocks and the online module change function can be executed.
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